A two-dimensional microscopic model of microcellular polyurethane elastomer (MPUE) was established by using COMSOL MultiphysicsV4.4 of the multiphysics finite element analysis.Based on the same hole size
the effect of the hole density was calculated
as a result
it significantly affects the mechanical properties of the MPUE.In addition
based on the same hole number
the corresponding hole density also affects the mechanical properties of the MPUE.The results indicate that the hole density is important in affecting the mechanical properties of the MPUE.When the hole density is less than 0.4
the stress increases linearly with the increase of the hole density; while when it is greater than 0.5
the stress increases nonlinearly with the increase of the hole density and the toughening effect of the holes are more obvious.In addition
the fluctuation of the hole size makes an increase of the stress
while reducing the variance of the hole size can improve the stability of the mechanical properties of MPUE.
关键词
微孔聚氨酯弹性体力学性能有限元模拟
Keywords
Microcellular polyurethane elastomerMechanical propertyFinite element simulation